Double air pump



FIG. 1 is a perspective view of a double air pump showing my design;

FIG. 2 is a front elevational view of FIG. 1;

FIG. 3 is a rear elevational view of FIG. 1;

FIG. 4 is a left side elevational view of FIG. 1;

FIG. 5 is a right side elevational view of FIG. 1;

FIG. 6 is a top plan view of FIG. 1; and,

FIG. 7 is a bottom plan view of FIG. 1.

All the Drawings are presented in the normal black and while colors.

The broken lines shown in the figures depict portions of the double air pump that form no part of the claimed design. 

CLAIM The ornamental design for a double air pump, as shown and described. 